Portable vacuum dust-extractor.



G. J. HARVEY. PORTABLE VACUUM DUST EXTRAGTOR. APPLIOATION FILED JUNE 3,190a.

Patented Jan. 5, 1909.

2 SHEETS-SHEET 1.

' i if 61/ K]? k Y xhkmemco G. J. HARVEY. PORTABLE VACUUM DUSTEXTBAGTOR.

APPLICATION FILED JUNE 3, 1908. Patented Jan. 5

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FXZ e L9 UNITED STATES PATENT OFFICE.

CHARLES J tMES'HARVEY, OF KIDDERMINSTER, ENGLAND.

PORTABLE VACUUM DUST-EXTRACTOR.

Specification of Letters Patent.

Patented Jan. 5, 1909.

Application filed June 3, 1908. Serial No. 436,611.

T all whom'tfi may concern:

Be it known that I, CHARLES JAMES HAR- VEY, a subject of the King ofGreat Britain,

residing at 9 Church street, Kidderminster,

En land, have invented certain new and useful Improvements in PortableVacuum bining one or more ex austers with a dust a collectingcontrivance also arranged as to permit of the apparatus being foldedinto a small compass and .being locked together nect the movable outerportions of the bellows a, whereby the expansion of all compresses theother and vice versa.

The machine may be built with the hinged end of the bellows upwards orat any an lo and the said bellows may be operated y hand, pedal, ormotor power.

The outstanding ortion d, of the base or foot board on whic the machineis built is by means of the dust boxb. Stays 0, con-' hinged parallelto, and as near the side of the dust box I), as possible, and will serveas hereinafter appears as ameans of locking the Whole together whenfolded as. well as a steadying base for pedal or motor driven machines.a

Stays c, are provided hinged at their lower end to the edge of thehinged rojectiing or outstanding portion (1, of t e foot when folded soas to be rendered more convenient for transport from one place orposition to another. vention may be fully understood I wi describe samewith reference to the accompanying, drawin s and letters and figures ofreference mar ed thereon, that isto say Fi ure 1, is an elevation of thedevice in its fo dad or closed state. Fig. 2, a similar .view showingthe device showing the foot board let down in operative osition. Fig. 3,a similar view showing the device showing a compression and expansion ofthe bellows. Fig. 4, a similar view showing the reverse expansion andcompression of the bellows.

Fig. 5, an end elevation. -Fi 6, an end elevation o posite to Fig. 5.ig. 7, a plan view'of t e ap aratus. Fig. 8, a side elevation showing te apparatus folded or closed 40 for trans ort. Fig. 9, an end elevationshowing t e apparatus in its open or operative state.

Similar letters of.reference indicate like parts throughout.

In carrying m inventioninto eflect I use two exhausting ellows a, a, butinstead of, as usual, making them doubleeach forming part of the other,I separate them entirely and fix them on opposite sides of the dust boxb, as seen more artioul-arly in Figs. 1, 2, 3, 4, 7, and 8 of therawings, and connect them i gage with eyes or kno And in order that min- 1 7 board and formed with hooks f, or of a hooked sha pe at theirupper or free ends to enfitments provided on the machine to fix it inthe open position. Similar eyes, knobs or fitments h, are rovided uponthe side edges of the front be ows a, to which the hooked ends f, of thestays e, are attached when it is desired to keep the machine or aparatus closed. These stays e, may further e made to run in slotsrovided to prevent their fa ing about w en not hooked. Or a short chainor other suitable contrivance may be provided to effect the same purose.

T e bellows a, a, may be operated by hand by means of the handle 6,which will also serve (see Fig. 8) as a draw bar b which the apparatus,mounted on the w eels k, may e drawn or pro elled from one position toanother or the ellows may be oper ated by pedal or motor power. Tubingl, a nozzle m, and other accessories usual for the requirements ofpneumatic cleaning are su plied and fitted to the apparatus in theordinar manner.

at I claim is In a portable vacuum dust extractor, the combination of adust box, a pair of bellows mounted on opposite sides of the dust box,

s g, or other suitable.

uide them and hinged stays connecting said bellows whereby the expansionof. one. compresses the other, a platform hinged to the base of the Intestimony whereof, I aflix my signa- (lilSLfifbOX, stays haginlg 011:?enzlhpixfrleted tcithefe i ture, in presence of two Witnesses.

a; orm, means or QC mg e ee encs o 1 the stays to thedust box when theplatform l CHARLES JAMES HARVEY 5 is open and means for. locking saidend to Witnesses:

one of the bellows when the platform is JAMES MORTON, closed. Y 5 GEO.W. COOKE.

